Thuja's main action is due to its stimulating volatile oil. In bronchial catarrh Thuja combines expectoration with a systemic stimulation beneficial if there is also heart weakness. Thuja has a specific reflex action on the uterus and may help in delayed menstruation
Research has found that lemon balm has a mild sedative effect, antibacterial and antiviral properties, and an ability to relieve cramps and gas. It is used to heal wounds, ease indigestion, relieve menstrual cramps, fight cold sores, relax nerves, soothe and prevent insect stings, and prevent insomnia. It has also been used for hysteria, melancholia, headaches, and high blood pressure. The tea is also recommended for inducing perspiration and relieving fever due to colds and flu. Externally, lemon balm has been used for rheumatism, nerve pains, as an insect repellent, and for stiff neck. It is approved by the German Commission E for nervousness and insomnia. This herb is gentle enough for babies and children.
The leaves of passion flower have been shown to make a nonaddictive sedative that relaxes the nervous system. Passion flower seems especially helpful when physical or mental strain results in insomnia or stress.
For centuries, lavender has been used as a general tonic, sedative, antispasmodic, diuretic, digestive aid, and gas remedy. Lavender tea and essential oil are prescribed to treat common minor ailments such as insomnia, nervousness, fatigue, headaches, nausea, and gas. Its aroma helps to stimulate mental processes to help patients with dementia and alleviate mild to moderate depression.
Mint relaxes the peripheral blood vessels, calms smooth muscle spasms, dries dampness, expels phlegm, and clears the head. It is regarded as an excellent remedy for stomach cramps due to its ability to reduce hypercontractability of the intestinal muscles. It is often added to formulas using laxative herbs, such as cascara sagrada, to prevent intestinal gripe. Peppermint is considered the strongest mint medicinally, though the other mints have medicinal benefit as well. Peppermint has activity against a wide range of pathogens including streptococcus, staphylococcus, and candida.
Goat's rue is chiefly used as an antidiabetic herb, having the ability to reduce blood sugar levels. The herb has the effect of increasing breast-milk production. It is also a useful diuretic.